The computer has rebooted from a bugcheck.

I reinstalled Windows on 7/06/2007, on 08/06/2007 I got the first reboot, today I got the second random reboot, I've wonder could someone analyse the dump files and see where's the problem with my system?
In the Event Viewer I saw these lines:

8/06
The computer has rebooted from a bugcheck. The bugcheck was: 0x1000000a (0x00001831, 0x000000ff, 0x00000000, 0x8053196a). A dump was saved in: C:\WINDOWS\Minidump\Mini060807-01.dmp.